IDW(Inverse Distance Weighted)是一种常用而简便的空间插值方法，它以插值点与样本点间的距离为权重进行加权平均，离插值点越近的样本点赋予的权重越大。-IDW (Inverse Distance Weighted) is a common and simple spatial interpolation method that the distance between the interpolation point and the sample point is weig